Polished Marble Bar Chert slab MB102 outback jasper 225 mm x 110 mm

225 mm x 110 mm x 10

Dimensions at widest points approximately 205 mm  x 150 mm x 55 mm thick

AMU108   Portion of an Amethyst geode with a cut base to stand as a display specimen

RH251  A slab

Dimensions at widest points are approximately 100 mm x 80 mm x 45 mm

Polished Marble Bar Chert slab MB102 outback jasper 225 mm x 110 mmMB102 Marble Bar Chert slab, polished on one side. Dimensions at widest points approximately 130 mm x 100 mm x 8. 6 mm thick. Weighs 248 grams. Marble Bar chert is a finely banded, iron rich silica rock from the Marble Bar Chert Member (Warrawoona Group) of Western Australia. Formed in shallow Archean seas, it dates to the Paleoarchean (~3. 46 billion years old), making it one of the Earths oldest well preserved sedimentary rocks. From near the town